Culvert Flow Calculator

Formula

The formula to calculate the flow rate (Q) is:

\[ Q = A \times V \]

Where:

\( Q \) is the flow rate (cubic feet per second, cfs).
\( A \) is the cross-sectional area of the culvert (square feet, sq ft).
\( V \) is the flow velocity (feet per second, ft/s).

What is a Culvert Flow Rate?

Culvert flow rate is the volume of water that passes through a culvert per unit of time. It is an important measure in hydrology and civil engineering for designing drainage systems and for flood control. The flow rate depends on the size and shape of the culvert, the hydraulic gradient, and the roughness of the culvert’s interior surface.

Example Calculation

Consider an example where:

Cross-Sectional Area (A): 10 sq ft
Flow Velocity (V): 5 ft/s

Using the formula to calculate the flow rate:

\[ Q = 10 \times 5 = 50 \text{ cfs} \]

This means that the flow rate for this example is 50 cubic feet per second.